| 摘要 |
<p>PURPOSE: An optical sensing device is provided to increase the reading accuracy of a plaque dark blue color by controlling the influence of the external light. CONSTITUTION: An optical sensing device includes an optical sensing circuit(103p), a light unit(102) including a light source, a light guide, and a fixing plate, and a data processing circuit(105). The light guide plate includes a first side, a second side, and a third side. The light guide plate contacts a part of the first side and reflects the light of the light source. The second side of the light guide plate faces the optical sensing circuit. The light guide plate generates a data signal from the light which is reflected from a part.</p> |
